tests by here4u with the online test builder (693 tests)

21. How long...?/ Since when...?: tenses. (6019 candidates)
22. 'Used to' or 'would'? (5589 candidates)
23. 'Than', 'as' or '(that)? (7675 candidates)
24. Vocabulary: lose, waste: in many ways... (3450 candidates)
25. Vocabulary: verbs + ing or the infinitive (4587 candidates)
26. Order of adjectives. (3684 candidates)
27. Possession - vocabulary (3664 candidates)
28. Focus sur SHOULD/ OUGHT TO: necessity and duty. (3932 candidates)
29. Resultatives (2972 candidates)
30. Confusion : to make up for something? to catch up with someb (29 candidates) [Being reviewed]
31. Focus on MUST: an ambiguous modal auxiliary. (3954 candidates)
32. Focus on MAY: Possibility and permission. (3873 candidates)
33. Focus on CAN: incapacity and impossibility. (4514 candidates)
34. Recycling waste... - Vocabulary (2930 candidates)
35. Likely/unlikely - Willing/ unwilling (159 candidates) [Being reviewed]
36. 'Whose' and idiomatic possessive forms... (4755 candidates)
37. Preference: I'd rather go.../ I'd rather you went (5234 candidates)
38. Verbs in the -ing form, or not? (5710 candidates)
39. Verbs with two object complements (3241 candidates)
40. Vocabulary: some time/ sometime/ sometimes (4547 candidates)